Combined boiler and water-heater.



J. ERDb'DI.

COMBINED BOILER AND WATER HEATER.

APPLICATION FILED DEC.3\. 1915.

1,2QL52Q, Patented Apr. 3, 1917.

2 SHEETSSHEET l.

WI T/VESS v v INVE/V r01? J. ERDb'm.

COMBINED BOILER AND WATER HEATER.

APPLICATION FILED DEC.3I| l9l5- Patented Apr. 3, 1917.

2 SHEETSSHEE|' 2 LQQLEQUQ Br I I I A ATTOI? Er JOHAN ERnoDI, or new YORK, 1v. Y.

COMBINED BOILER AND W'ATER-HEATEB.

Application filed December 31, 1915.

bined steam generator and water heater,

specially adapted for use in tenement houses and apartment houses where a supply of hot water is continuously needed for bathing, washing and other purposes, and steam for heating.

The main object of the present invention is to so combine a steam boiler and a waterheater that the products of combustion in the fire-box, flues, etc., of the boiler are caused to generate steam in the latter and at the same time to heat water in a closed receptacle that is independent of the boiler, means being provided also for .heating the water in said receptacle independently of the furnace of said boiler.

With these and other objects in view, which will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrangement and construction of parts hereinafter fully described, pointed out in the appended claim and illustratedin the ac companying drawings, it being understood that many changes may be madein the size and proportion of the several parts and de tails of construction within the scope of the appended claim without departing from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated in the accompanying drawings, in which Figure 1 is a vertical transverse section taken through a boiler constructed in accordance with the present invention, the water heater being shown in elevation; Fig. 2 is a horizontal longitudinal section taken through the said boiler with aplan View of the heater; and Fig. 3 is a side elevation of one element of the water-heater.

In the drawings, a cylindrical boiler of the simplest construction is shown for purposes of illustration. It is, however, to be noted that the heater herein described may be com- Specification of Letters Patent.

Patented Apr. 3, 1917.

Serial No. 69,617.

bined with other boilers just as well, as will appear hereinafter.

Referring to the drawings, the numeral 10 indicates a horizontal cylindrical boiler, that is set in brick-work 11 in any preferred manner. Below the boiler is formed the furnace or fiI6bOX 12 thereof, including a grate 13, which extends in the case illustrated in the drawings throughout the length of the boiler. A substantial distance above the grate are disposed inclined baffles 14, said baflies extending from the sides of the fire-box down-ward and converging toward the longitudinal center line of the gate. Near their upperends there is provided in each of the bafiles a horizontal row of apertures 15, for a purpose hereinafter to be described.

The water-heater comprises a closed receptacle 16, to which leads a water supply pipe 17, a pipe 18 being tapped into its cylindrical shell for the purpose of conducting the hot water to the place or places at which it is to be used. The means for heating the water in this receptacle comprises two substantially U-shaped pipes 19,

which are disposed in the fire-box of the boiler, more particularly one below each of the baflies 1 k These U-shaped pipes .are held within'the fire-box in any suitable manner, for instance upon brackets 20, and extend through the rear wall 21 of the brickwork of the boiler, their upper legs 22 being connected outside of the brick-work by a pipe section 23, and their lower legs 24 being also connected outside of the brickwork by a pipe section 25. The heater sections 19 and the pipe sections 23 and 25 form thus an endless tube system, the sec tion 25 of which is connected by a supply pipe 27, and the tube section 23 by a return pipe 26 with the receptacle 16. The pipe 26 is tapped into said receptacle as near as possible its upper edge, and the pipe 27 as near as possible its lower edge.

The receptacle 16 is also connected to a small boiler 28, that is independent of the boiler above described. The connection between the receptacle 16 and the boiler 28 is made by a pipe 29, that is tapped into the pipe 27 above described, and furthermore by a pipe 30, that is tapped into the pipe 26 above mentioned. In the pipes 29 and 30 are inserted valves 31 and 82, respectively, valves 33 and 34'. being inserted into the pipes 26 and 27, respectively, be-

tween the heater sections 19 and those points at which the pipes 29 and 30 join the pipes 27 and 26, respectively.

The operation of this device is as follows: In cold weather when steam is needed, say for instance for the radiators of the house and hot water for bathing, washing and other purposes, lire is placed into the firebox or furnace of the boiler 10. The valves 31 and 32 are set so as to close the communication between the small boiler 28 and the water receptacle 16. In this manner steam is generated in the boiler 10, and simultaneously therewith the sections 19 of the pipe system heated. Obviously, there is thus obtained a continuous circulation of the water in the receptacle through the pipe system thereof, whereby the entire mass of water is heated, to be conducted through the pipe 18 to the place or places at which it is to be used. The products of combustion in the furnace have a tendency to rise-towardthe boiler 10, and inasmuch as the baffles 1a are inclined and the combined areas of the apertures 15 small in comparison with the cross section of a passage bounded by the side walls of the boiler and the said baflies, the flow of the products of combustion from the said passages through the saidapertures toward the boiler 10 will be retarded. The

products of combustion are thus caused to give up considerable part of their heat to the pipe sections 19, which will be thus quickly and economically heated.

If only hot water is needed, the valves 33 and 34: are turned to their closing positions and the valves 31 and 32 to their I open positions. The fire-box of the smaller boiler 28 is then fired.

In exceedingly cold weather, the fire-boxes of both boilers may be fired. In this case, obviously all valves must be turned to their open positions.

lVhat I claim is:

In a water heater, the combination with a boiler furnace, of inclined baflie plates within said furnace forming with the sides thereof passages, said battle plates being provided with apertures, an endless pipeline having its major portion disposed within said passages, the portion of the pipeline within said furnace being throughout its length in direct contact with the products of combustion as the latter rise from the grate of the furnace and before they come into contact with the boiler, and two pipes leading from said pipeline.

Signed at New York, in the county of New York, and State of New York, this 14th day of Dec., A. D. 1915.

JOHAN ERDODI.

' copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

